Improvement



2 Sheets-Sheet, 1,

J. PEDDER. Machine for Rolling Hoes, Picks, 850.

No 207,367. Patented Aug. 27,1878.

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J. PEDDER. Machine for Rolling Hoes, Picks. 820.

No. 207,367. Patented Aug. 27,1878.

Wide $88K: $1, 01:-

G c. M

FFIGE.

JOHN PEDDER, 0F BEAVER FALLS, PENNSYLVALIA.

IMPROVEMENT lN MACHINES FOR ROLLING HOES. PICKS, &.C.

Specification forming part of Letters Patent No. 207,367, dated August27, 1878; application filed August 7, 1878.

Falls, in the county of Beaver and State of- Pennsylvania, have inventeda new and useful Improvement in Machines for Rolling Hoes, Picks, andother Articles; and I do hereby declare the following to be a full,clear, and exact description thereof, reference being had to theaccompanying drawing, forming part of this specification, in which'Figure 1 is an elevation of devices embodyin g my invention. Fig. 2 is alongitudinalsec tion of the same. Fig. 3 is a sectional view of diesadapted to the formation of picks. Figs. 4 and 5 are similar views ofdies for forming bolsters on knife or fork blanks. Figs. 6, 7, and S areviews of a few of the many articles capable of being produced withsuitable dies.

Like letters refer to like parts wherever they occur.

My invention relates to the construction and operation of rolls forproducing various shapes-such as solid-eye hoes, high-eye picks, knifeand fork blanks with bolsters and solid handles, and many other formswell known to the 1llLl'i1l-WO1kCl', and now usually forged or formed indrop-dies.

To this end my invention consists, first, in combining with a pair ofrolls a movable or piston die or dies capable of being operated throughthe roll or rolls and during the operation of the rolls, wherebyspecific and irregir lar forms having projections or cavities may bereadily rolled without hindera-nce or limitation from the draftof therolls.

Heretofore in the manufacture of solid-eye hoessuch as planters hoeshigh-eye picks, knife and fork blanks with bolsters, and numerous otherarticles of irregular form where thick projections or deep cavities weredesired, either iorging or the use of drop-dies has been commonlyresorted to, because the article could be formed either in its finishedshape or so near thereto as to require the minimum of subsequent laborto complete it. tolls have been but little used, because the draft ofthe rolls limited the depth of cavity or height of projection that couldbe formed in or on the metal rolled, and the blank produced bythe rollsrequired more labor to finish it than one produced by forging or dropdies, so that what was gained in power and speed by use of rolls was frequently offset by the linishin g process.

Thus far inventors have mai 111 y confined their attention to devisingforms and shapes capzr ble of being produced by rolling, and which couldbe subsequently finished by the minimum of labor; but my presentinvention is directed to such modification ot' the rolls as will givethe combined advantages of both rolls and drop-dies.

1 will now proceed to dcscribemy invention, so that others skilled inthe art to which it uppertains may apply the same.

In the drawing, A indicates a bed, upon which are erected suitablehousings 1 '15 for he rolls 0 D. The rolls 0 D should be geared to movetogether either by segments E 1 or equivalent devices; and the oppositejour nals of the rolls may be provided, if desired, with disk-rolls G llfor any appropriate use. Vhere necessary, the usual housing-screws (notshown) for adjusting the rolls will be employed.

lhe faces of rolls 0 D may be constructed to receive fixed dies 0 (l,keyed thereto in the usual manner; or the face of the roll may be itselfshaped to the desired form, which, in every instance, will be such partof the entire shape as can readily be produced by rolling.

In the rolls 0 D are arranged movable piston-dies c f, whose faces willcorrespond to such portions of the article to be formed cannot be rolledto advantage. These pistondics 0 and f may be, and preferably are, operated by screws 9 and h, which pass through the rolls; and in order toavoid the turning of the die or other movement which might have atendency to distort the metal, the screw is made separate from andindependent of the die, though in case of the upper die (and some timesin case of the lower die also) it will. be necessary to arrange aswivel-connection, so that the screw shall be capable of retracting thedie. I

1' indicates a lever secured to the screw of the upper roll, andproieetin g therefrom so as to strike a post or projection, 7:, on thehousin g, whereby the screw is partly rotated and the piston-dieretracted. The same or equivzn lent means can, when desired, be appliedto the screw controlling the piston-die of the lower roll.

In Figs. 1. and 2 of the drawing are shown dies for rolling solid-eye orplanters hoes, the dies 0 (I having the necessary shape to taper theblade (in one or bothdirections) and term a bead thereon, while thepiston-dies of are adapted to set up the .solid eye. I will thereforedescribe the operation of the machime in the formation of a hoe-blank.

lower having been applied to the rolls, and a bar of suitable sizehaving been properly heated, the lever i is pulled forward, so as toturn the screw and project the piston-die ethe desired distance. Theheated bar is then insorted between the rolls, and as the rolls move thepiston-die c forces the metal into the cavity of f. The lever '1',coming in contact with post 7; as the rolls continue to turn, reversesthe screw and retracts the piston-die, permit-' ting the blank to clearthe rolls without distortion. The dies 0 (I taper the blade of the hoeand form a bead thereon, and as the housi n g-serews are operated to setdown the rolls said dies rapidly form and finish the blank.

ln order to square up the shoulder or eye of the hoe, the piston-die 7"may be raised somewhat at the instant (or after) the piston-die c hasbeen retracted. This will lift the cup slightly out of the cavity of f,and the further action of the rolls will upset the stock and insure afull and perfect eye.

The operation of the machine will be the dies shown in Figs. 1 and 2.

I am aware that a piston punch or swage has been combined with a hollowroll, and

actuated by cam mechanism within the roll,

and used in conjunction with a counter-die, and do notgherein claim thesame; but,

Having thus set forth the nature, object, and advantage of my invention,what I claim, and desire to secure by Letters Patent, is

1. The combination, with a pair of rolls, of a piston or swaging die anda fixed die located in the same roll, and whose combined facesconstitute the form to be produced, the piston or sw'aging die workingtransversely through the roll, and having part or parts of the formsubstantially as specified, said piston die also adapted to be partiallyor entirely retracted during the operation ofthe rolls, substantially asand for the purpose specified.

2. The combination, with a pair of rolls, of a piston or swagin g die ordies working transversely through the roll, and adapted by mechanism,substantially as described, to be entirely or partially projected andretracted, substantially as and for the purpose specified.

In testimony whereof I, the said JOHN PED- DER, have hereunto set myhand.

JOHN PEDDER. Witnesses 0 JAMES H. PORTE, H. A. LEON TRAMSET.

